Music-leaf turner.



P. HOYER.

Music LEAF TURNER.

APP 1,237,339. Patented Aug; 21, 1917.

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il i r KMK) n l nl muslo LEAF TURNER. APPLlcATxoN FILED SEPT. 14. 191s.

Patented Aug. 21,1917.

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P. HOYR.

MUS|C LEAF TURNER.

APPLlcATloN FILED 55m14.191s.

1,237,339. Patented Aug. 21,1917.

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, M gli/wanton' UNITED sTATEs PATENT oEEicE.

. PAUL I-IOYER, OF DOVER', NEW JERSEY.

MUSIC-LEAF TURNER.

T o all .whom t may concern:

Be it known that, LQPAUL HoYER, a subject of the Emperor` ofv Germany, and a resident of Dover, in the'cou-nty of Morris and State of New Jersey, have invented new and useful Improvements in Music-Leaf Turners, ofwhich the following is a specification.

This invention relates to improvements in appliances for turning leaves of sheet music and the like in which the leaves are printed upon both sides and engaged together in the manner of a book.

The principal object ofthe invention is to provide' a device which may be applied to the front of a musical instrument of the pia-no type, the musicV leaves being each independently operated at such moment as may be required by merely making manual contact with a knob or lever disposed within reach of the operator.

Another object is to provide means whereby the pages or sheets of music may be returned or operated in either direction, and nally to provide such operating device in forms convenient of application, inexpensive in construction and positive in their operation. f

These and other objects are attained by the novel design, construction and combination hereafter described and shown in the accompanying drawings, forming a material part of this disclosure, and in which Figure lis a front elevational View of a musical instrument showing the application of the invention.

Fig. 2 is an enlarged front view indicating the application to the printed sheets of music.

Fig. 3 is a perspective view showing a further enlargement of the operating mechanism.

Fig. 4 is a horizontal sectional view taken on line 4 4 of Fig. 2.

Fig. 5 is a partial front and sectional view` showing parts of the operating mechanism.

Fig. 6 is a transverse sectional view taken on line 6 6 of Fig. 5, and

Fig. 7 is an enlarged sec-tional view taken on line 7 7 of Fig. 2.

A stand or easel 10 formed with a footing 11 is adapted to rest upon any convenient support, as at the upper front part of a musical instrument, and is provided with an arm 12 standing toward the front and having a space between its inner surface and the front of the support in which the leaves Specification of Letterslatent.

Application filed September 14, 1916.

Patented Aug. 21, i917.

Serial No. 120,061. i

13 of music may be inserted and: whereby the same Lare held in a relatively vertical position, lso as to be conveniently seen by the musician.

A pair of bracket-s 14 stand slightly outward from. the front of the easel 10 and vmounted inthe brackets is a shaft 15 having a fixed collar 17, resting upon the lower bracket vand holding the shaft in relative position. A plurality of hubs 18 are freely rotatable upon the shaft 15 and from these hubs extend arms 20 having at their extreme outerror free ends. pins 21 acting as extensions ofthe arms for purposes which will farther on become evident.`

Formed with the hubs 15 are drums 22 to which are secured one end ofV flexible cords v23 the other end of the cords being attached to helical coiled pull spring 24 secured at their outer end in turn to the easel 10.

Thus as the arms are moved causing the hubs and drums to rotate the springs exert a tendency to turn the arms to the left against thev support easel 10. Arranged upon the opposite side of the support easel are a plurality of vertical bars 28 having an outwardly extending front portion 29 provided with push buttons 30, the bars being guided by means of a. clip 31 and held normally upward by light pull springs 32 as best shown in Fig. 2.

The upper ends of the bars 28 are engaged by pivots 33 with the outer end 35 of levers pivoted near their center 36, the opposite end 37 of the levers having attached to them outwardly extending arms 38 provided with a plurality of serrations or teeth 40 adapted to engage with the pins 21 secured at the front of the arms 20 as can best be seen in Fig. 3.

Stops 41 are arranged on the face of the support or easel limiting the upward motion of the levers and rods 28 so that the push buttons 30 stand normally in alined rows.`

Attached to each of the arms 2O are depending strips 42 having at their' extreme lower ends securing devices as the spring clips 43 adapted to engage at different positions with the upper marginal portion of the music or other sheet to be turned, the last sheet or page of which may be held by the stationary clip 44.

In operation the several pages or book is passed back of the bar 12 and adjusted in proper position to be read, each of the several sheets to be turned being engaged with the clips 43 in consecutive order, the first page being engaged with theupper elements so as not to lnterfere with the succeeding arms as they operate.

When it is desired to turn one of the sheets the corresponding push button 30 is depressed and through itsconnections raises the corrugated-arm 38, releasing the pin 21, and allowing the arm 20 to be operated by the pull of the springs 24, folding the sheet of musicy Vfrom right to left, without the necessity of removing vthe hands from the instrument except for such time as is required to touch the button. Obviously the succeeding sheets are operated in a similar manner.

If it is desired to turn the pages backward the arms 20 may be operated ly the hand,

.the pins 2l engaging with the corrugations l0, holding them securely in osition.

v If the music be in a book 'o relative thicklnessthe pins 21 would obviously engage toward the Outer end of the arms 38 whereas if only the few sheets of music are to be used y(Rupia: otthh patent may bel obtained` for ive cents each, by addressing the Commissioner of Patents,

the pin will engage closely toward the lever 37.

Having thus described my invention, and set forth the manner of its application and use, what I claim as new and desire to secure by Letters Patent, is

A music leaf turner including a support a shaft'mounted thereon, a plurality of leaf engaging arms pivotally mounted on said shaft, means for swinging each of said arms from one sideof the shaft to the other, a detent'lever for holding each of said arms on one side of said shaft, said detent lever being provided with a plurality of serrations any one of which is selectively adapted to engage one leaf engagin arm as may be require by the various thic nesses of music books, and means for operatin each of said detent levers to successively re ease the leaf 'i engaging arms.

In testimony whereof I have signed my name to this specification.

PAUL HOYER.

Washington, D. C.

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